CN116290004A - Safety support structure with support frame - Google Patents
Safety support structure with support frame Download PDFInfo
- Publication number
- CN116290004A CN116290004A CN202310530095.7A CN202310530095A CN116290004A CN 116290004 A CN116290004 A CN 116290004A CN 202310530095 A CN202310530095 A CN 202310530095A CN 116290004 A CN116290004 A CN 116290004A
- Authority
- CN
- China
- Prior art keywords
- foundation pit
- supporting
- pit body
- rod
- guide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 229910000831 Steel Inorganic materials 0.000 claims description 7
- 239000010959 steel Substances 0.000 claims description 7
- 230000002146 bilateral effect Effects 0.000 claims description 3
- 239000013039 cover film Substances 0.000 abstract description 25
- 239000010408 film Substances 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 230000013011 mating Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000002489 tectorial membrane Anatomy 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
- E02D—FOUNDATIONS; EXCAVATIONS; EMBANKMENTS; UNDERGROUND OR UNDERWATER STRUCTURES
- E02D17/00—Excavations; Bordering of excavations; Making embankments
- E02D17/02—Foundation pits
- E02D17/04—Bordering surfacing or stiffening the sides of foundation pits
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/242—Safety or protective measures preventing damage to building parts or finishing work during construction for temporarily covering the whole worksite, e.g. building, trench
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A10/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE at coastal zones; at river basins
- Y02A10/23—Dune restoration or creation; Cliff stabilisation
Landscapes
- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Paleontology (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Mechanical Engineering (AREA)
- Buildings Adapted To Withstand Abnormal External Influences (AREA)
- Foundations (AREA)
- Sewage (AREA)
Abstract
Compared with the traditional safety support structure, the safety support structure for the foundation pit is provided with the cover film, the side wall of the foundation pit body can be protected when storm and heavy rainfall are met, wherein the end part of the cover film is connected with the connecting rod, and the connecting rod is connected with the guide side frame, so that the cover film is prevented from being blown, and the fixing reliability of the cover film is improved.
Description
The application is the application number 202210032448.6, the application day 2022, the year 01 and the month 12, and the application is a divisional application of the invention name of 'a safety support structure for a foundation pit of civil engineering'.
Technical Field
The invention relates to the technical field of civil engineering, in particular to a safety support structure with a support frame.
Background
In recent years, along with the mass emergence of high-rise and super-high-rise buildings in urban construction of China, the high-speed development of large municipal facility construction engineering and the development of a large amount of underground space, a large amount of deep foundation pit engineering is inevitably generated; among them, the foundation pit is an important part in the construction engineering, and its development has a close relationship with the development of the construction industry.
However, in regard to the present safety support structure for traditional foundation ditch, when encountering strong storm weather, rainwater impact foundation ditch lateral wall influences its stability, and the foundation ditch bottom can save the rainwater, and the foundation ditch area is great moreover, and manual work covers more troublesome, and the cover membrane is fixed not firmly and is blown away by strong wind easily moreover, and support piece's support distance is difficult to adjust in addition, is difficult to satisfy the support use of different width foundation ditch.
Disclosure of Invention
In view of the above, the invention provides a safety support structure with a support frame, which is provided with a cover film, wherein the cover film is firmly connected with a foundation pit through a guide side frame, so that the cover film is prevented from being blown, and meanwhile, the cover film can slide along the guide side frame to cover the top of a foundation pit body, and the use and the operation are convenient; the support piece can change the support distance through adapter sleeve, and then satisfies the support of different foundation ditch body widths and use, and its assembled mode is simple moreover, is convenient for install and dismantle.
The invention provides a safety support structure with a support frame, which specifically comprises the following components: the foundation pit comprises a foundation pit body, wherein guide side frames are arranged on the left side and the right side of a pit mouth of the foundation pit body, and the two guide side frames are symmetrically distributed; a supporting component is arranged in the foundation pit body; a covering film is arranged on the front side of the top end of the foundation pit body; the front side and the rear side of the top end of the foundation pit body are respectively provided with a servo motor, and the two servo motors are symmetrically distributed; the foundation pit body is internally provided with supporting pieces which are distributed in a parallel mode, and the supporting pieces are provided with connecting sleeves; the foundation pit is internally provided with a connecting cross rod, and the connecting sleeve is arranged at the top of the connecting cross rod.
Optionally, the guide frame bottom is equipped with the support frame, and support frame and foundation ditch body lateral wall fixed connection, and guide frame top is equipped with the spout, and is equipped with the guide bar in the spout.
Optionally, the support subassembly includes support crossbeam and support waist rail, and the support crossbeam supports between both sides direction strake, and the support crossbeam bottom is equipped with the support waist rail, and support waist rail bottom and foundation ditch body bottom fixed connection to connect the horizontal pole and run through in the support waist rail.
Optionally, the cover membrane tip is equipped with first connecting piece, and the cover membrane the place ahead is equipped with the connecting rod, and the cover membrane is connected with the connecting rod through first connecting piece, and the connecting rod both ends are equipped with the carriage, and the carriage is arranged in the spout of leading edge frame to carriage and guide bar sliding connection.
Optionally, the servo motor is gone up to rotate and is installed the rotation axostylus axostyle, and is equipped with the rope sheave on the rotation axostylus axostyle, and the winding is connected with the traction cable wire on the rope sheave, and the traction cable wire tip is equipped with the second connecting piece to second connecting piece fixed mounting is in connecting rod intermediate position.
Optionally, support piece includes fixed column, spliced pole, adjusting column and sliding block, and fixed column one end is connected with the shelves pole fixed connection of foundation ditch body lateral wall, and the fixed column other end is connected with the spliced pole, and the spliced pole opposite side is equipped with the adjusting column, and adjusts the column tip and be equipped with two sliding blocks.
Optionally, the supporting pieces are distributed in a bilateral symmetry mode, and the two supporting pieces are connected through the connecting sleeve.
Optionally, coupling sleeve is cylindricality and leads to the chamber structure, and coupling sleeve's lateral wall has seted up two places direction logical grooves, and coupling sleeve both ends are equipped with the baffle, and are equipped with the regulation bolt pole on the baffle.
Optionally, when the adapter sleeve is connected with the left and right side support pieces, the left and right side adjusting columns are slidably inserted into the through cavity of the adapter sleeve, the sliding block is slidably connected with the adapter sleeve through the guide through groove, and the sliding block is locked with the baffle through the adjusting bolt.
Optionally, the top of the connecting cross rod is provided with a fixed plate, the top of the fixed plate is provided with a fixed sleeve, and the connecting sleeve is arranged in the fixed sleeve.
Advantageous effects
Compared with the traditional safety support structure, the safety support structure for the foundation pit has the advantages that the side wall of the foundation pit body can be protected when storm and heavy rainfall are met due to the arrangement of the cover film, the end part of the cover film is connected with the connecting rod, and the connecting rod is connected with the guide side frame, so that the cover film is prevented from being blown, and the reliability of fixing the cover film is improved.
In addition, provide power by servo motor, utilize the pivot axostylus axostyle to drive the rope sheave rotation to through traction cable wire pulling connecting rod, make the tectorial membrane slide along the direction sideframe, and then accomplish the cover to foundation ditch body top, its simple structure uses the simple operation.
In addition, the support piece of wherein the left and right sides can be through adapter sleeve quick stable connection, because two places adjust the post and can carry out side-to-side sliding adjustment along adapter sleeve to utilize the regulation bolt pole control, consequently support piece can change the support distance through adapter sleeve, and then satisfies the support of different foundation ditch body widths and use, and its assembled mode is simple moreover, the installation of being convenient for and dismantlement.
Drawings
In order to more clearly illustrate the technical solution of the embodiments of the present invention, the drawings of the embodiments will be briefly described below.
The drawings described below are only for illustration of some embodiments of the invention and are not intended to limit the invention.
In the drawings:
FIG. 1 is a schematic view showing the overall structure of a safety support structure for a foundation pit according to an embodiment of the present invention;
FIG. 2 is a schematic view of the foundation pit safety support structure of FIG. 1 with the foundation pit body, cover film and servo motor removed, according to an embodiment of the present invention;
FIG. 3 shows a schematic view of a guide frame, a cover film, a servo motor and a support beam of a safety support structure for a foundation pit according to an embodiment of the present invention;
FIG. 4 shows a schematic view of the part of the supporting beams and the guiding side frames, the cover film and the servo motor led out of FIG. 3 of the safety supporting structure for the foundation pit according to an embodiment of the invention;
FIG. 5 is an enlarged schematic view of portion A of FIG. 3 of a safety support structure for a foundation pit according to an embodiment of the present invention;
FIG. 6 shows a schematic view of a support and connection sleeve of a safety support structure for a foundation pit according to an embodiment of the present invention;
FIG. 7 shows a schematic view of a portion of a support, a connecting rail and a connecting sleeve of a foundation pit safety support structure according to an embodiment of the present invention;
fig. 8 shows a schematic view of the explosion state led out in fig. 7 of the safety support structure for a foundation pit according to an embodiment of the present invention.
List of reference numerals
1. A foundation pit body; 2. a guide side frame; 201. a support frame; 202. a chute; 203. a guide rod; 3. a support assembly; 301. supporting the cross beam; 302. supporting a waist beam; 4. a cover film; 401. a first connector; 402. a connecting rod; 403. a carriage; 5. a servo motor; 501. rotating the shaft lever; 502. a rope pulley; 503. traction steel rope; 504. a second connector; 6. a support; 601. fixing the column; 602. a connecting column; 603. an adjusting column; 604. a sliding block; 7. a connection sleeve; 701. a guide through groove; 702. a baffle; 703. adjusting the bolt; 8. connecting the cross bars; 801. a fixing plate; 802. and (5) fixing the sleeve.
Description of the embodiments
In order to make the objects, aspects and advantages of the technical solution of the present invention more clear, the technical solution of the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings of the specific embodiment of the present invention. Unless otherwise indicated, terms used herein have the meaning common in the art. Like reference numerals in the drawings denote like parts.
Examples: please refer to fig. 1 to 8:
the invention provides a safety support structure for a civil engineering foundation pit, which comprises the following components: the foundation pit comprises a foundation pit body 1, wherein guide side frames 2 are arranged on the left side and the right side of a pit mouth of the foundation pit body 1, and the two guide side frames 2 are symmetrically distributed; a supporting component 3 is arranged in the foundation pit body 1; the supporting component 3 comprises a supporting beam 301 and a supporting waist beam 302, the supporting beam 301 is supported between the guide side frames 2 on two sides, the bottom of the supporting beam 301 is provided with the supporting waist beam 302, the bottom end of the supporting waist beam 302 is fixedly connected with the bottom of the foundation pit body 1, and the connecting cross rod 8 penetrates through the supporting waist beam 302; a cover film 4 is arranged on the front side of the top end of the foundation pit body 1; the front side and the rear side of the top end of the foundation pit body 1 are respectively provided with a servo motor 5, and the two servo motors 5 are symmetrically distributed; the foundation pit body 1 is internally provided with supporting pieces 6, the supporting pieces 6 are distributed in a parallel mode, and the supporting pieces 6 are provided with connecting sleeves 7; the foundation pit body 1 is internally provided with a connecting cross rod 8, and the connecting sleeve 7 is arranged at the top of the connecting cross rod 8.
In addition, according to the embodiment of the invention, as shown in fig. 3, 4 and 5, a supporting frame 201 is arranged at the bottom of the guiding side frame 2, the supporting frame 201 is fixedly connected with the side wall of the foundation pit body 1, a sliding groove 202 is arranged at the top of the guiding side frame 2, and a guiding rod 203 is arranged in the sliding groove 202;
the cover film 4 tip is equipped with first connecting piece 401, cover film 4 the place ahead is equipped with connecting rod 402, and cover film 4 is connected with connecting rod 402 through first connecting piece 401, connecting rod 402 both ends are equipped with carriage 403, and carriage 403 sets up in the spout 202 of direction strake 2, and carriage 403 and guide bar 203 sliding connection, this structure is provided with cover film 4, can protect foundation ditch body 1 lateral wall when meetting storm and heavy rainfall, wherein cover film 4 tip is connected with connecting rod 402, and connecting rod 402 is connected with direction strake 2, thereby avoid cover film 4 to be blown, cover film 4 fixed reliability has been improved.
In addition, according to the embodiment of the present invention, as shown in fig. 3, 4 and 5, a rotating shaft 501 is rotatably installed on the servo motor 5, a rope wheel 502 is provided on the rotating shaft 501, a traction steel cable 503 is wound and connected on the rope wheel 502, a second connecting piece 504 is provided at the end of the traction steel cable 503, and the second connecting piece 504 is fixedly installed at the middle position of the connecting rod 402, and is powered by the servo motor 5, the rotating shaft 501 drives the rope wheel 502 to rotate, and the connecting rod 402 is pulled by the traction steel cable 503, so that the cover film 4 slides along the guide side frame 2, thereby completing the covering of the top of the foundation pit body 1.
In addition, according to the embodiment of the present invention, as shown in fig. 6, 7 and 8, the supporting member 6 includes a fixed column 601, a connection column 602, an adjusting column 603 and a sliding block 604, one end of the fixed column 601 is fixedly connected with a bar on the side wall of the foundation pit body 1, the other end of the fixed column 601 is connected with the connection column 602, the other side of the connection column 602 is provided with the adjusting column 603, and the end of the adjusting column 603 is provided with two sliding blocks 604;
the supporting pieces 6 are distributed in a bilateral symmetry mode, and the two supporting pieces 6 are connected through a connecting sleeve 7;
the connecting sleeve 7 is of a cylindrical through cavity structure, two guide through grooves 701 are formed in the side wall of the connecting sleeve 7, baffle plates 702 are arranged at two ends of the connecting sleeve 7, and an adjusting bolt 703 is arranged on each baffle plate 702;
when the connecting sleeve 7 is connected with the left and right side supporting pieces 6, the left and right side adjusting columns 603 are slidably inserted into the through cavities of the connecting sleeve 7, the sliding blocks 604 are slidably connected with the connecting sleeve 7 through the guide through grooves 701, and the sliding blocks 604 and the baffle 702 are locked through the adjusting bolt rods 703;
the connecting cross bar 8 top is equipped with fixed plate 801, and the fixed plate 801 top is equipped with fixed cover 802 to adapter sleeve 7 sets up in fixed cover 802, and wherein support piece 6 of left and right sides can be connected through adapter sleeve 7 quick stability, because two adjusting column 603 can carry out side-to-side sliding adjustment along adapter sleeve 7 to utilize adjusting bolt 703 control, consequently support piece 6 can change the supporting distance through adapter sleeve 7, and then satisfies the support of different foundation ditch body 1 width and use.
Specific use and action of the embodiment: the invention is provided with the covering film 4, which can protect the side wall of the foundation pit body 1 when storm and heavy rainfall are met, wherein the end part of the covering film 4 is connected with the connecting rod 402, and the connecting rod 402 is connected with the guide side frame 2, so that the covering film 4 is prevented from being blown; the servo motor 5 provides power, the rotating shaft rod 501 is used for driving the rope wheel 502 to rotate, and the connecting rod 402 is pulled by the traction steel cable 503, so that the covering film 4 slides along the guide side frame 2, and the covering of the top of the foundation pit body 1 is completed; the support pieces 6 on the left side and the right side can be quickly and stably connected through the connecting sleeve 7, and the two adjusting columns 603 can be adjusted in a sliding mode left and right along the connecting sleeve 7 and controlled by the adjusting bolt 703, so that the support distances of the support pieces 6 can be changed through the connecting sleeve 7, and further support and use of different foundation pit body 1 widths are met.
Finally, it should be noted that the present invention is generally described in terms of a/a pair of components, such as the location of each component and the mating relationship therebetween, however, those skilled in the art will appreciate that such location, mating relationship, etc. are equally applicable to other components/other pairs of components.
The foregoing is merely exemplary embodiments of the present invention and is not intended to limit the scope of the invention, which is defined by the appended claims.
Claims (2)
1. A safety support structure that contains support frame, its characterized in that: the safety support structure is for civil engineering foundation ditch safety support structure, include: the foundation pit comprises a foundation pit body (1), wherein guide side frames (2) are arranged on the left side and the right side of a pit mouth of the foundation pit body (1), and the two guide side frames (2) are symmetrically distributed; a supporting component (3) is arranged in the foundation pit body (1); a covering film (4) is arranged on the front side of the top end of the foundation pit body (1); the front side and the rear side of the top end of the foundation pit body (1) are respectively provided with a servo motor (5), and the two servo motors (5) are symmetrically distributed; the foundation pit body (1) is internally provided with supporting pieces (6), the supporting pieces (6) are distributed in a parallel mode, and the supporting pieces (6) are provided with connecting sleeves (7); a connecting cross rod (8) is arranged in the foundation pit body (1), and a connecting sleeve (7) is arranged at the top of the connecting cross rod (8);
the bottom of the guide side frame (2) is provided with a supporting frame (201), the supporting frame (201) is fixedly connected with the side wall of the foundation pit body (1), the top of the guide side frame (2) is provided with a sliding groove (202), and a guide rod (203) is arranged in the sliding groove (202);
the end part of the covering film (4) is provided with a first connecting piece (401), the connecting rod (402) is arranged in front of the covering film (4), the covering film (4) is connected with the connecting rod (402) through the first connecting piece (401), and sliding frames (403) are arranged at two ends of the connecting rod (402);
the support piece (6) comprises a fixed column (601), a connecting column (602), an adjusting column (603) and sliding blocks (604), one end of the fixed column (601) is fixedly connected with a baffle rod on the side wall of the foundation pit body (1), the other end of the fixed column (601) is connected with the connecting column (602), the other side of the connecting column (602) is provided with the adjusting column (603), and the end part of the adjusting column (603) is provided with the two sliding blocks (604);
the supporting pieces (6) are distributed in a bilateral symmetry mode, and the two supporting pieces (6) are connected through the connecting sleeve (7);
the connecting sleeve (7) is of a cylindrical cavity structure, two guide through grooves (701) are formed in the side wall of the connecting sleeve (7), two baffle plates (702) are arranged at two ends of the connecting sleeve (7), and an adjusting bolt rod (703) is arranged on each baffle plate (702);
when the connecting sleeve (7) is connected with the left and right side supporting pieces (6), the left and right side adjusting columns (603) are slidably inserted into the through cavity of the connecting sleeve (7), the sliding block (604) is slidably connected with the connecting sleeve (7) through the guide through groove (701), and the sliding block (604) is locked with the baffle (702) through the adjusting bolt (703);
the supporting assembly (3) comprises a supporting cross beam (301) and supporting waist beams (302), the supporting cross beam (301) is supported between the guide side frames (2) on two sides, the supporting waist beams (302) are arranged at the bottom of the supporting cross beam (301), the bottom ends of the supporting waist beams (302) are fixedly connected with the bottom of the foundation pit body (1), and the connecting cross beam (8) penetrates through the supporting waist beams (302).
2. The support-containing safety support structure of claim 1, wherein: a rotating shaft rod (501) is rotatably arranged on the servo motor (5), a rope wheel (502) is arranged on the rotating shaft rod (501), a traction steel cable (503) is wound on the rope wheel (502), and a second connecting piece (504) is arranged at the end part of the traction steel cable (503); the top of the connecting cross rod (8) is provided with a fixing plate (801), the top of the fixing plate (801) is provided with a fixing sleeve (802), and the connecting sleeve (7) is arranged in the fixing sleeve (802).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310530095.7A CN116290004A (en) | 2022-01-12 | 2022-01-12 | Safety support structure with support frame |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310530095.7A CN116290004A (en) | 2022-01-12 | 2022-01-12 | Safety support structure with support frame |
| CN202210032448.6A CN114293563B (en) | 2022-01-12 | 2022-01-12 | Civil engineering foundation ditch is with safe supporting construction |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210032448.6A Division CN114293563B (en) | 2022-01-12 | 2022-01-12 | Civil engineering foundation ditch is with safe supporting construction |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116290004A true CN116290004A (en) | 2023-06-23 |
Family
ID=80978062
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202310530095.7A Withdrawn CN116290004A (en) | 2022-01-12 | 2022-01-12 | Safety support structure with support frame |
| CN202210032448.6A Active CN114293563B (en) | 2022-01-12 | 2022-01-12 | Civil engineering foundation ditch is with safe supporting construction |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210032448.6A Active CN114293563B (en) | 2022-01-12 | 2022-01-12 | Civil engineering foundation ditch is with safe supporting construction |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN116290004A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114809019A (en) * | 2022-05-28 | 2022-07-29 | 上海山安建设工程有限公司 | Foundation pit supporting structure and foundation pit construction method |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20190024367A1 (en) * | 2015-10-05 | 2019-01-24 | Shaw & Sons, Inc. | Concrete dowel placement system and method of making the same |
| CN211257026U (en) * | 2019-11-21 | 2020-08-14 | 深圳市东深工程有限公司 | Steel sheet pile cofferdam |
| CN111305232B (en) * | 2020-03-31 | 2022-01-04 | 南京地下空间高技术产业研究院有限公司 | A foundation ditch protection strutting arrangement for construction of old city district |
| CN111705807A (en) * | 2020-06-23 | 2020-09-25 | 青岛一建集团有限公司 | Dust settling system for excavation construction of urban long and narrow type support-free deep foundation pit |
| CN215053034U (en) * | 2021-07-16 | 2021-12-07 | 王盼伟 | Dustproof work shed for foundation pit |
-
2022
- 2022-01-12 CN CN202310530095.7A patent/CN116290004A/en not_active Withdrawn
- 2022-01-12 CN CN202210032448.6A patent/CN114293563B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN114293563A (en) | 2022-04-08 |
| CN114293563B (en) | 2023-05-30 |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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Application publication date: 20230623 |